55231525221566 has 8 divisors (see below), whose sum is σ = 82870884336144. Its totient is φ = 27607897109520.

The previous prime is 55231525221553. The next prime is 55231525221581. The reversal of 55231525221566 is 66512252513255.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×55231525221566³ (a number of 42 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3932741855 + ... + 3932755898.

It is an arithmetic number, because the mean of its divisors is an integer number (10358860542018).

Almost surely, 2^{55231525221566} is an apocalyptic number.

55231525221566 is a deficient number, since it is larger than the sum of its proper divisors (27639359114578).

55231525221566 is a wasteful number, since it uses less digits than its factorization.

55231525221566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7865501266.

The product of its digits is 5400000, while the sum is 50.

The spelling of 55231525221566 in words is "fifty-five trillion, two hundred thirty-one billion, five hundred twenty-five million, two hundred twenty-one thousand, five hundred sixty-six".